US4280920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized aluminosilicate slurries
Assignee: Lever Brothers Co
•
Filing: 1979-02-26
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Granted: 1981-07-28
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Expires: 1999-02-26
Abstract
Abstract Suspensions of sodium aluminosilicate are stabilized by using 0.5-10% of a nonionic detergent active compound and 0.2-15% of a compatible water soluble salt. The stabilized suspensions can be used in the preparation of particulate detergent compositions by adding one or more other detergent ingredients and then drying the mixture.
Inventors
- 👤 Michael J. Garvey
- 👤 Ian C. Griffiths
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:27
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/12; C11D3/124; C11D3/1246; C01; C01B; C01B33/00; C01B33/20; C01B33/26; C01B33/28; C01B39/00; C01B39/02; C01B39/026
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
93 words
A substantially stable aqueous suspension of a sodium aluminosilicate ion-exchange material which comprises from about 35% to about 50% of the sodium aluminosilicate (anhydrous basis) from about 0.5% to about 10% of a water-soluble nonionic detergent active compound having a cloud point in excess of about 55° C. as determined in accordance with DIN 53917 and from about 0.2% to about 15% of a compatible water-soluble salt, all percentages being by weight of the aqueous suspension, said suspension having a maximum viscosity of less than about 50 poise at a low shear rate.
Claim 2
Dependent Claim
93 words
A substantially stable aqueous suspension of a sodium aluminosilicate ion-exchange material which comprises from about 35% to about 50% of the sodium aluminosilicate (anhydrous basis) from about 0.5% to about 10% of a water-soluble nonionic detergent active compound having a cloud point in excess of about 55° C. as determined in accordance with DIN 53917 and from about 0.2% to about 15% of a compatible water-soluble salt, all percentages being by weight of the aqueous suspension, said suspension having a maximum viscosity of less than about 50 poise at a low shear rate.
Claim 3
Dependent Claim
21 words
An aqueous suspension according to claim 1, wherein the sodium aluminosilicate is zeolite A or zeolite X or a mixture thereof.
Claim 4
Dependent Claim
29 words
An aqueous suspension according to claim 1, wherein the sodium aluminosilicate is an amorphous material having the nominal general formula 0.8-1.5Na 2 O.Al 2 O 3 .2-3SiO 2 .
Claim 5
Dependent Claim
25 words
An aqueous suspension according to claim 1, wherein the amount of sodium aluminosilicate is from about 35% to about 45% by weight of the suspension.
Claim 6
Dependent Claim
30 words
An aqueous suspension according to claim 1, wherein the nonionic detergent compound is the condensation product of C 12 -C 16 alkyl alcohol with about 7-11 moles of ethylene oxide.
Claim 7
Dependent Claim
26 words
An aqueous suspension according to claim 1, wherein the amount of nonionic detergent compound is from about 1% to about 5% by weight of the suspension.
Claim 8
Dependent Claim
14 words
An aqueous suspension according to claim 1, wherein the salt is a sodium salt.
Claim 9
Dependent Claim
14 words
An aqueous suspension according to claim 1, wherein the salt has a polyvalent anion.
Claim 10
Dependent Claim
24 words
An aqueous suspension according to any one of the preceding claims, wherein the salt is sodium sulphate or sodium carbonate or a mixture thereof.
Claim 11
Dependent Claim
25 words
An aqueous suspension according to claim 1, wherein the amount of the salt is from about 0.5% to about 10% by weight of the suspension.
Claim 12
Dependent Claim
36 words
A process for the production of a particulate detergent composition from an aqueous suspension of sodium aluminosilicate according to claim 1 by adding thereto one or more other detergent ingredients and then drying the resultant mixture.
Claim 13
Dependent Claim
12 words
A particulate detergent composition made by a process according to claim 11.
References Cited (Backward Citations)
GB1464427A
Cited
GB1429143A
Cited
US4126574A
Cited
US3962116A
Cited
DE2538679A1
Cited
DE2533615A1
Cited
US4072622A
Cited
US4000094A
Cited
DE2702972A1
Cited
US4179393A
Cited
US4129511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-27 | 1985-01-26 | 1985-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-27 | 1989-01-26 | 1989-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-27 | 1993-01-26 | 1993-07-28 | $7700.00 | Window Closed / Lapsed |